Помогите решить неравенства. Created by nvolnov123. algebra-ru

Помогите решить неравенства...

nvolnov123 @nvolnov123

August 2022 1 1 Report

Помогите решить неравенства

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wejde

Verified answer

X²-4>0
(x-2)(x+2)>0
x∈(-∞;-2)∪(2;+∞)

x²-4=0
(x-2)(x+2)=0
x=-2
x=2

4-x²>0
(2-x)(2+x)>0
x∈(-2;2)

x²+7x=0
x(x+7)=0
x=0
x=-7

x²+7x≥0
x(x+7)≥0
x∈(-∞;-7]∪[0;+∞)

x²>7x
x²-7x>0
x(x-7)>0
x∈(-∞;0)∪(7;+∞)

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nvolnov123 July 2022 | 0 Ответы

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Answers & Comments

Verified answer

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pomogite reshit zadaniya105d2c08dfd5a1599a34ffeaa250bdab 96084

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pomogite pozhalujsta reshit esli mozhno s obyasneniem4d6ec0477383266f1b9a941927a286a1 49841

pozhalujsta pomogite reshit3138d00261003cb7274baf5b75587d15 28743

pomogite reshit uravnenie2cecf6ed3b6fb8a417603647d3871c28 16518

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